fisher



H. L. FISHER.

LUBRlCATING SYSTEM.

APPLICATION FILED MAY13,1919.

ATTORNEYS UU m 2 JU Wm 90 Sm l g 5 a 3. Z m P W 1 2/2 Z 1 b .13 a 7 A 4 p1 0 7 z 9. r k L m% m w a j o w 5 1 Q, 1 2 m Q 3, w m 1 H. L. FISHER.

LUBRICATING SYSTEM. APPLICATION FILED MAYIH. 1919.

lu tented Sept. 9, 1919.

4 SHEETS--SHEET 2.

WI T/VESSES A TTOR/VEJS H. L. FISHER.

LUBRICATING SYSTEM.

APPLlCATlON FILED MAY 13. 1919.

PatentedSept. 1919.

4 SHEETS-SHEET 3.

ATTORNEYS H. L. FISHER.

LUBRICATING SYSTEM.

APPLICATION FILED MAY 13. 1919.

Patented Sept. 9, 1919.

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fipeciflcation of Letters Patent.

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Patente depth. 2 12th..

application tiled May 1.3, 1219. Serial lt'o. aaaeea.

To all whom it may concern:

Re it known that 1, Hanna Larron French, a subject of the King of Great Britain, and a resident of Hamilton, in the Province of Ontario and Dominion of Canada, have invented certain new and useful improvements in Lubricating @ystems, of which the following is a specification.

My invention is an improvement in lubrieating systems, and has for its object to provide a system of the character specified especially adapted for internal combustion engines, for thoroughly lubricating the crank shafts and the pistons, wherein the lubrication is brought about by the movement of the crank shaft.

Tn the drawings:

Figure 1 is a vertical section of a portion of an internal combustion engine provided. with the improved system,

Figs. 2,3 and 4 are sectlons on the lines 2-2, 3-3 and M, respectively, of Fig. 1.

Fig. 5 is a section similar to Fig. 4t showing a modified construction,

Fig. 6 is a section on the line 6--6 of Fig. 5.

ln the present embodiment of the invention a circular trough 1 is provided for each two cranks 2 of the crank shaft 3, the said troughs snugly encircling that portion a of the crank shaft which connects the two cranks 2. Each trough, as shown in Fig. 8, is sectional, and the sections have radial lugs 5 at their ends, which are secured to the crank case by bolts and nuts 6. Thus that portion 4.- of the crank shaft between the two cranks rotates within the trough, and scoops 7 are secured to the portion 4: at the ends thereof, these scoops having bases 2 which are secured to the portion 4: by screw bolts, as shown.

Each of these scoops dips into the adja cent trough, and scoops up the oil there from as the crank shaft rotates, and this oil is fed through registering passages 9 and 10 in the scoop and in the portion. a, to a passage 11 which extends transversely of the said portion 4; and into the adjacent crank, the said passage being axial to the crank and having a radial extension 12 which opens at the periphery of the crank, in the bearing 13 of the piston rod 14, which is connected to the piston 15 in the cylinder 16 in the usual manner;

Referring to Fig. 1, it will be noticed that the passage 11 extends to that face of the ortion a which is remote from the cran and a plug 17 is provided for normally closing the outer end of the said passage. Thus the oil may feed freely from the scoop through the communicating passages 9, 10, 11 and 12 to the bearing on the crank.

Each piston rod 14; has a longitudinally entending cored passage 18 which communicates with a passage 19 in the crank pin 20 which connects the piston with the piston rod. This passage 19 extends longitudinally of the pin, opening at each end there of, and by means of the passages 18 and 19 oil will be conducted to the peripher of the piston to lubricate the piston an the cylinder.

A check valve 21 is arranged within the passage 18 near its connection with the bearing, and the valve is normally held. closed by a spring 22 which is arranged be tween the valve and a plug 23 threaded into an inclined opening in the piston rod, which communicates at its inner end with the passage. Referring to Fig. 1, it will be seen that each of the bushings 24 of the cranks is recessed as indicated at 25 adjacent to the passage 18, to provide an oil space adja cent to the crank.

The oil pan 26 has the grooves 2'? at the cranks, and the usual pipe 28 connects the pan with the pump (not shown) for with drawing the oil. As shown, this pipe 28 has a branch 29 for each of the grooves 27.

Referring to Fig. 4, it will be seen that each of the passages 9 from the scoop 7 inclines outwardly in the direction that the crank is traveling, so that there is no impediment to the oil flow from the scoop to the passa e 11. The oil passes into the troughs 1 y way of a pipe 30, each trough having a pipe 30 for supplying the oil.

Tn operation, when the engine is running each crank and each piston is thoroughly lubricated. The scoops 7 pick up the lubricant from the troughs, and the said lubricant flows through the passages 9, 11 and 12 to the bearings of the cranks. From here the oil flows through the passages 18 and 19 to the surface of the plston. The surplus oil from the bearings is supplied to the cylinder walls and to the interior of the crank case, and this surplus is returned to the oil sump. to be again strained and pumped to the bearings. The system gives a low pressure, steady force feed of clean, cool oil to the bearings and cylinders. The

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pressure on the check valve 21 may be regu lated by means of the plug 23, thus allow ing more or less oil to pass the valve, as may be desired. On the down stroke of the piston the valve lifts, permitting a small quantity of lubricant to pass. It reseats on the up stroke and retains the lubricant taken, thus acting as a force pump to sup ply a steady stream of lubricant to the Wrist pin 20 and the cylinder Walls. Only fresh oil is delivered to the crank and from thence splashed into the cylinder. The amount of oil fed to each pair of cylinders may be closely regulated by controlling the amount of oil fed to the pump through the pipe 30.

In the embodiment of the invention shown in Figs. 5 and 6, the trough 31 corresponding to the trough 1 of Fig. 1 is arranged in the same manner as the trough 1, but instead of the scoops with bases, the scoops 32 are connected with a ring 33 which is arranged concentric with the trough, engaging at its ends the ends of the element 4.

I claim;

1. In combination with the crank shaft, the cylinders, the pistons, the crank pins, and the piston rods connecting the crank pins with the cranks of the crank shaft, of a common means for force feeding lubricant to the bearings of the piston rods and to the cylinder walls, said means comprising annular troughs encircling the crank shaft between each pair of adjacent cranks and adapted to contain lubricant, the crank shaft having scoops moving within the trough, said shaft having passages leading from each scoop to the bearing of the adjacent crank, the piston rod and the crank pin having longitudinally extending passages communlcating with each other for leading the lubricant from the bearing of the crank to the cylinder Walls, a spring controlled check valve in the passage of the piston rod, and means for varying the pressure of the spring.

2. In combination with the crank shaft, the cylinders, the pistons, the crank pins, and the piston rods connecting the crank pins with the cranks of the crank shaft, a common means for force feeding lubricant to the bearings of the piston rods and to the cylinder walls, said means comprising an nular troughs encircling the crank shaft between each pair of adjacent cranks and adapted to contain lubricant, the crank shaft having scoops moving within the trough said shaft having passages leading from each scoop to the bearing of the ad acent crank, the piston rod and the crank pin having longitudinall extending passages con-unit nicating with each other for leading the lubricant from the bearing of the crank to the cylinder walls, and a spring controlled check valve in the passage of the piston rod.

3. In combination with the crank shaft, the cylinders, the pistons, the crank pins, and the piston rods connecting the crank pins with the cranks of the crank shaft, of a common means for force feeding lubricant to the bearings of the piston roost and to the cylinder walls, said means comprising annular troughs encircling the crank shaft be tween each pair of adjacent cranks and adapted to contain lubricant, the crank shaft having scoops moving within the trough, said shaft having passages leading from each scoop to the bearing of the adjacent crank.

l. In combination wii h the crank shaft, the cylinder, the piston, the crank pin and the piston rod connecting' the crank pin with the crank shaft, of a common means for force feeding lubricant to the hearings of the piston rod and to the cylinder walls, said means comprising annular troughs coaxial with the crank shalt, said shall having a scoop moving in the trough for supplying the oil to the bearings, the crank shaft, the piston rod and the crank pin having communicating passages for conducting the oil, and a spring controlled check valve in one of the passages for preventing return of the lubricant.

In combination with the crank shaft, the cylinder, the piston. the crank pin and the piston rod connecting the crank pin with the crank shaft, of a common means for force feeding lubricant to the bearings of the piston rod and 'lo the cylinder walls, said means comprising annular troughs coaxial with the crank shaft, said shaft ha ving a scoop moving in the trough for supplying the oil to the hearings, the crank shaft, the piston rod and the crank pin having communicating passages for conrhu-tiing tlie ll.

6. In combination with the crank shaft, of means for force feeding lubricant lo the bearings of the shaft. said means comprising annular troughs coaxial with the crank shaft, the shaft having a scoop moving in the trough for supplying the oil lo the bearings. said shaft having passages for con bearings.

ducting the oil to the HENRY I Witnesses SAM GrnLrs, ELIZABETH Jami Grams. 

